An atypical nevus or dysplastic nevus (mole) is a benign growth that may share some of the features of a melanoma, but is NOT a melanoma or any other form of cancer. The presence of an atypical nevus, however, may increase the risk of developing a melanoma, or be a marker for it. A single atypical nevus may indicate a small risk; this risk increases with the number of atypical nevi present.

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